JPH09125501A - Flush toilet stool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the cleaning of the lower face of a rim water passage and rarely generate a backlash on a toilet seat during use over a long period by setting the elevation angle of the lower face of the rim water passage and the depression angle of the upper face to the angles within specific ranges respectively. SOLUTION: The elevation angle α of the lower face of a rim water passage 3 provided at the upper edge of the basin section 2 of a flush toilet stool is set to 20-100 deg.. If the flush toilet stool is a Western style toilet stool 1, the depression angle β of the upper face of the rim water passage 3 is set to 5 deg. or above. In the Western style toilet stool 1, the elevation angle α is preferably set to 30-90 deg., and the depression angle β is preferably set to 10-45 deg.. The elevation angle α is preferably set to 75-90 deg. at the front section W of the Western style toilet stool 1, and the width in the direction perpendicular to the longitudinal direction of the rim water passage 3 at the upper end of the front section W is preferably set to 35mm or below.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flush toilet having a rim water passage, and more particularly to a flush toilet suitable for being applied to a Western-style toilet.

[0002]

2. Description of the Related Art As is well known, a Western-style toilet has a rim water passage around the upper edge of a bowl, and the rim water passage is used to supply washing water to the bowl surface. The toilet seat is laid down on the upper side of the bowl, and the user sits down.

Some Japanese-style toilets are provided with a rim water passage.

There is a case where the upper surface of the rim water passage has a slight downward slope toward the inside of the pot so that water and urine flow into the pot. The bottom surface of the rim waterway is almost horizontal.

The width (thickness) in the direction perpendicular to the longitudinal direction of the rim water passage at the upper end of the front of the western-style toilet is about 40 to 50 mm.

[0006]

The above-mentioned conventional flush toilet bowl has the following problems.

Since the lower surface of the rim water passage is easily soiled and difficult to clean, it easily becomes a source of odor generation.

When used for many years, the toilet seat is loosened, and the toilet seat easily swings in the lateral direction of the toilet bowl.

Since the width of the upper end of the front part in the direction orthogonal to the longitudinal direction of the rim water passage is large, urine is likely to be applied to the upper surface of the front part of the bowl when a boy stands up and uses it for a small amount.

A first object of the present invention is to provide a flush toilet in which the lower surface of the rim water passage can be easily cleaned.

A second object of the present invention is to provide a flush toilet bowl in which the toilet seat is less likely to rattle even after being used for many years.

[0012] A third object of the present invention is to provide a flush toilet bowl which is not easily soiled by a boy standing upright and using it for small purposes.

[0013]

A flush toilet bowl according to claim 1 is
In a flush toilet having a rim water passage provided at the upper edge of the bowl portion, an elevation angle α (an elevation angle in a direction orthogonal to the rim water passage longitudinal direction) of the lower surface of the rim water passage is set to 20 to 100 °. To do.

The elevation of the lower surface of the rim water passage makes it easier to clean the lower surface of the rim water passage.

The flush toilet according to claim 2 is the flush toilet according to claim 1, wherein the flush toilet is a Western-style toilet and the depression angle β of the upper surface of the rim water passage (the depression angle perpendicular to the longitudinal direction of the rim water passage).
Is 5 ° or more.

In such a flush toilet, since a force is applied to the toilet seat lying on the bowl in the direction toward the center of the bowl, the toilet seat is prevented from swinging in the lateral direction of the toilet.

According to the present invention, the elevation angle α is 3
It is preferable that the angle is 0 to 90 ° and the depression angle β is 10 to 45 °.

According to a fourth aspect of the present invention, in the front portion of the Western-style toilet, the elevation angle α is 75 to 90 °, and the width at the upper end of the front portion in the direction orthogonal to the longitudinal direction of the rim water passage is set. It is preferable to configure it to be 35 mm or less. In this way, the elevation angle α is set to an angle close to a vertical overhang, so that the lower surface of the rim water passage is inconspicuous, and the lower surface of the rim water passage can be visually observed and thoroughly cleaned evenly during cleaning.

Further, by reducing the width of the rim water passage in the front part of the Western-style toilet bowl, it becomes difficult for urine that has fallen from above to fall on the upper surface of the rim water passage. By making the lower surface of the rim water passage substantially vertical, the flow passage cross-sectional area of the rim water passage can be increased.

[0020]

BEST MODE FOR CARRYING OUT THE INVENTION A western style toilet according to an embodiment will be described with reference to FIGS. 1 (a) is a plan view of the Western-style toilet, FIG. 1 (b) is a cross-sectional view taken along the line BB of FIG. 1 (a), and FIG. 2 is taken along the line II-II of FIG. 1 (a). It is a cutting part end view.

A bowl portion 2 is provided at the front of the western-style toilet 1, and a rim water passage 3 is provided around the inner periphery of the upper portion of the bowl portion 2. A toilet seat (not shown) is arranged above the rim water passage 3 so as to lie down. Reference numeral 4 indicates a mounting hole for the toilet seat and the toilet lid.

The Western-style toilet 1 according to this embodiment is of a type called a tightly-sealed type in which a low tank is installed on the rear upper surface, and a low tank mounting portion 5 is provided on the rear upper surface. A hose-shaped member called a distributor connected to the outlet on the bottom surface of the low tank is inserted into the water passage hole 6. The wash water from the low tank is supplied to the rim water passage 3 from this distributor.

A large number of water spray holes 7 are provided on the lower surface of the rim water passage 3 so that water can flow out to the inner surface of the bowl 2. The water in the bowl portion 2 is discharged to the drain port 9 via the trap portion 8.

The upper surface of the rim water passage 3 has a downward slope over the entire circumference at a depression angle β toward the bowl portion 2. This β is 5 ° or more, especially 10 to 45 °, especially 25 to 40
° is preferred. By setting β in this range, a force (a component force along the upper surface of the rim water passage 3 of the gravity applied to the toilet seat) that acts toward the center of the bowl 2 acts on the toilet seat (not shown) that has laid down on the upper surface of the Western-style toilet. However, rattling of the Western-style toilet 1 on the toilet seat in the left-right direction is prevented. Further, with such a large downward slope, water and urine splashed on the upper surface of the rim water passage can quickly flow down into the bowl 2.

In the front part of the Western-style toilet 1, the lower surface of the rim water passage 3 is substantially vertical (preferably (75 to 90 °)).
And the width d in the direction orthogonal to the longitudinal direction of the rim water passage at the upper end of the front part is 35 mm or less (preferably 22 to 35 m).
m is particularly preferably 26 to 32 mm).

By making the lower surface of the rim water passage 3 in the front part of the pot part substantially vertical as described above, the lower surface of the rim water passage can be visually observed and sufficiently cleaned. Further, since the width d of the rim water passage 3 is made small, urine that has fallen from above is less likely to fall on the rim water passage 3. Moreover, since the lower surface of the rim water passage is substantially vertical, the flow passage cross-sectional area of the rim water passage 3 can be increased.

The front part of the Western-style toilet 1 is a range in which a man stands upright when he stands up and uses it for a small amount (see FIG. 1).
(A) W range). This W is 200-300
mm, especially 220 to 280 mm is suitable.

Except for this front portion, the elevation angle α of the lower surface of the rim water passage 3 is 20 ° or more, especially 30 ° or more, especially 4
It is preferably 0 ° or more and 75 ° or less, particularly 70 ° or less, and particularly 60 ° or less. By setting the elevation angle α in this range, the lower surface of the rim water passage 3 is easy to clean and is inconspicuous.

It is preferable that the lower surface of the rim water passage 3 is smoothly continuous from the front portion to the rear portion.

Although the above embodiments relate to the tightly-coupled Western-style toilet, other Western-style toilets may be used. Further, the present invention can be applied to a Japanese style toilet having a rim water passage.

[0031]

As described above, in the flush toilet bowl according to claims 1 to 4, the lower surface of the rim water passage can be easily cleaned. Claims 2-4
The flush toilet bowl of this type does not cause rattling in the toilet seat even after many years of use, and has excellent durability. The flush toilet according to claim 4,
The rim water passage in the front of the Western-style toilet bowl is not easily dirty. Especially, urine that has fallen down from above is less likely to get caught.

[Brief description of the drawings]

FIG. 1 is a plan view and a vertical sectional view of a Western-style toilet according to an embodiment.

FIG. 2 is an end view of a cut portion taken along the line II-II in FIG.

[Explanation of symbols]

 1 Western style toilet 2 Bowl part 3 Rim water passage 7 Water injection hole

Claims (4)

[Claims] 1. A flush toilet bowl in which a rim water passage is provided at an upper edge of the bowl portion, wherein an elevation angle α of a lower surface of the rim water passage is set to 20 to 100 °. 2. The flush toilet according to claim 1, wherein the flush toilet is a Western-style toilet and the depression angle β of the upper surface of the rim water passage is 5 ° or more. 3. The elevation angle α according to claim 2, wherein the elevation angle α is 30 to 30.
The flush toilet bowl is 90 ° and the depression angle β is 10 to 45 °. 4. The elevation angle α is 75 to 90 ° in the front portion of the Western-style toilet bowl, and the width of the upper end of the front portion in the direction orthogonal to the rim water passage longitudinal direction is 3.
A flush toilet bowl having a size of 5 mm or less.